[Shop-talk] question on LP tanks
Steven Trovato
strovato at optonline.net
Sat Mar 2 12:08:09 MST 2019
From Propane 101: (seriously, that's what the website is called!)
OPD valves are also designed to only allow propane into and out of
the bottle if attached to the appropriate hose end connection. The
threads on this type of connection are called ACME threads and are
visible on the OPD valve at the point of connection. The ACME threads
are easily identified by how much larger and farther apart they are
as compared to normal pipe threads. OPD valves will not allow propane
out of the bottle if it is not hooked up to anything. This is why
turning (opening) an OPD handwheel on an unattached bottle does
nothing in terms of letting propane out. Many people think that the
bottle is empty but in fact, the cylinder needs to be hooked up to
allow any gas out. Learn more about the
<http://www.propane101.com/valveopennopropane.htm>Valve Open - No
Propane issue that many users have with OPD equipped propane cylinders.
http://www.propane101.com/opdcylindervalves.htm
Now, understanding all of that, I still don't know if your tank is
full. Where did you buy it? If you picked it up off the shelf
inside a store, I'm sure it was empty at that time. Did you bring it
somewhere to be filled? There are some stores that will sell you a
filled tank, but either they fill it right before they give it to you
or they store it somewhere outside the store.
I very much doubt that the tank was filled and leaked out all of its
propane. I suspect that either it is full or it was never
filled. The tank will weigh a lot more when full. Typical grill
tanks weight 17lbs empty and 37 lbs full. The empty weight (Tare
Weight) should be stamped on the tank.
-Steve
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